Evaluating the effect of reinforcing fibres on pervious concrete volumetric and mechanical properties according to different compaction energies

Abstract

Pervious concrete is a cementitious material characterised by a network of interconnected voids allowing meteoric water to percolate within the concrete matrix. The optimal void content typically ranges from 15% up to 35% of the concrete total volume depending on the applications (ACI Committee 522, 2010;Delatte, Mrkajic, & Miller, 2009;Yang & Jiang, 2003). Gap-graded coarse aggregates and almost no fines are used in the mixes to preserve a high range of voids and therefore drainability features. A viscous cement paste (cement, water and admixtures) is then used to prevent segregation and to bond the aggregates. The water/cement ratio usually varies between .2 and .4, while cement content, generally measured with respect to the aggregate weight, ranges between .18 and .23 of cement/aggregate ratio (Tennis, Leming, & Akers, 2004). The finer portion of the aggregate (below 2 mm of nominal size) is typically omitted from

Experimental study on the effects of fine sand addition on differentially compacted pervious concrete

“…That is, great drainability would generally result in lower mechanical performances. However, the use of additives such as reinforcing fibers [14,23] or a controlled fine sand dosage [14,17,18,35], could result in a optimum balance in which hydraulic properties were guaranteed while providing enough mechanical resistance to withstand traffic loads.…”

“…Greater percentage of fine aggregate in the mix generally produce an increase in the mortar thickness surrounding the aggregate and at the same time, porosity decreased and compressive strength significantly increased [14]. Fly ashes, latex emulsion, and other polymers have been also included to improve the PCP strength and durability, as well as a small amount of fibers [5,[19][20][21][22][23].…”

Laboratory Assessment of the Infiltration Capacity Reduction in Clogged Porous Mixture Surfaces

“…While PA mixtures were produced by using a mix of 80%/20% of limestone and basaltic aggregate, respectively. PC mixtures were made with coarse limestone aggregates and 5% fine sand by weight of aggregates, according to previous works [27,28]. PA mixtures were produced with a dosage of 4% by weight of a mixture of Styrene Butadiene Styrene-modified bitumen.…”

Evaluation of the Effect of Different Compaction Methods on Porous Concrete Pavements: Correlation with Strength and Permeability

“…For each method, four different compaction forces were applied, according to EN 13286-53 (EN 13286-53 2004), EN 12697-31 (EN 12697-31 2019), EN 12697-30 (EN 12697-30 2018 (Bonicelli et al 2015;Ghashghaei and Hassani 2016;Kevern, Schaefer, and Wang 2009;Kim, Gaddafi, and Yoshitake 2016). In addition, three samples were manufactured per compaction force in order to obtain a more accurate result.…”

“…Compaction work is a critical characteristic that determines the pavement's behavior during its lifetime (Bonicelli et al 2015). It is known that laboratory results vary from in-situ tests and applications.…”